Method for the control of an injector in an internal combustion engine
AssigneeMagneti Marelli Powertrain S.p.A.
InventorsPaolo Marceca, Luca Poggio, Michele Cagnoni, Piero Carbonaro, Andrea Nepote
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Abstract
A method for control of an injector in an internal combustion engine in which for a specific engine cycle, a control unit calculates a desired value of the opening time of the injector and forwards this desired value to a drive circuit of the injector, a supervision device calculates an actual value of the opening time of the injector during the injection phase, compares this actual value with the desired value and generates an error signal if the difference between the desired value and the actual value is outside a predetermined acceptability range.
Claims5
A method for the control of a group of injectors (2) in an internal combustion engine (3), in which method a relevant desired value (Tinj) of the opening time of each injector (2) is calculated for a given engine cycle (3) and this desired value (Tinj) is forwarded to a drive device (12) of the injector (2);
- a relevant actual value (Tinjeff) of the opening time of each injector (2) is calculated during the injection phase, each actual value (Tinjeff) is compared with the relevant desired value (Tinj) once the actual values (Tinjeff) of all the injectors (2) have been calculated, and an error signal is possibly generated on the basis of a combination of the results of the comparisons between the actual values (Tinjeff) and the desired values (Tinj) of all the injectors (2).
Dependencies are inferred from the claim text.